/*

   Copyright 2006  The Apache Software Foundation 

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.ext.awt.image.codec.jpeg;

import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.batik.ext.awt.image.GraphicsUtil;
import org.apache.batik.ext.awt.image.spi.ImageWriter;
import org.apache.batik.ext.awt.image.spi.ImageWriterParams;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
 * ImageWriter implementation that uses the sun.com.image.codec.jpeg
 * intefaces to write JPEG files.
 *
 * @version $Id$
 */
public class JPEGImageWriter implements ImageWriter {

    /**
     * @see ImageWriter#writeImage(java.awt.image.RenderedImage, java.io.OutputStream)
     */
    public void writeImage(RenderedImage image, OutputStream out)
            throws IOException {
        writeImage(image, out, null);
    }

    /**
     * @see ImageWriter#writeImage(java.awt.image.RenderedImage, java.io.OutputStream, org.apache.batik.ext.awt.image.spi.ImageWriterParams)
     */
    public void writeImage(RenderedImage image, OutputStream out,
            ImageWriterParams params) throws IOException {
        BufferedImage bi;
        if (image instanceof BufferedImage) {
            bi = (BufferedImage)image;
        } else {
            //TODO Is this the right way?
            bi = GraphicsUtil.makeLinearBufferedImage(
                    image.getWidth(), image.getHeight(), false);
        }
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        if (params != null) {
            JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
            if (params.getJPEGQuality() != null) {
                param.setQuality(
                        params.getJPEGQuality().floatValue(),
                        params.getJPEGForceBaseline().booleanValue());
            }
            encoder.encode(bi, param);
        } else {
            encoder.encode(bi);
        }
    }

    /**
     * @see ImageWriter#getMIMEType()
     */
    public String getMIMEType() {
        return "image/jpeg";
    }
}
